This extension adds Open Graph markup to your site accordingly to the latest Facebook requirements. Boost your SEO with this extension and share your content on Facebook. When someone shares content from your site to Facebook, Facebook crawler will scrape the HTML of the URL that is share.
On a regular HTML page this content is basic and may be incorrect, because the scraper has to guess which content is important, and which is not.

Take control of what the Facebook crawler picks up from each page by using Open Graph meta tags.These tags provide structured info about the page such as the title, description, preview image, price and more.

Features

✔ Generate More Traffic
✔ Improve Branding
✔ Made according to the latest Facebook standards
✔ Easy Plug and Play installation
✔ vQmod - No files overwritten
✔ Works with any custom theme
✔ Support multistore
✔ Support multilanguage urls(if added)

Try it - check the source code. The tags are in the head section

Product page demo:
http://blue.listingproduction.com/test
Home page demo:
http://blue.listingproduction.com
Category page demo:
http://blue.listingproduction.com/desktops/mac
Information page demo:
http://blue.listingproduction.com/about_us

Go to the Facebook debugger tool and try it:
Facebook debugger
You will see a message "fb:app_id hasn't been included in the meta tags. Specify the app ID so that stories shared to Facebook will be properly attributed to the app. Alternatively, app_id can be set in url when open the share dialog. Otherwise, the default app id( 966242223397117 ) will be assigned."
It is optional and you can ignore it.
Or just register your app and contact us to help.

In case you also need to add Rich snippets to your site (used by all search engines such as Google, Yandex and Bing), check out my extension Rich Snippets SEO Product, Breadcrumbs, Knowledge Graph, Search to significantly improve your SEO.